I'm here to provide some insights about voiding checks in QuickBooks Online, rsturgis.

You need to wait for the bank to clear the check before voiding it in QuickBooks. Once cleared, here's how to void it in the system .

I also suggest consulting your account if this will affect the prior period. If you don't have one, we can help you find a ProAdvisor.

On the other hand, QuickBooks Desktop has more accounting needs and requires customization features. That's why some features aren't available on the Online version.

Let me know if you need more assistance with this. I'll be right here to provide the information you need.